Since the project has evolved beyond just a simple patch here and there, I think 2.5 makes more sense than 2.1 (a nomenclature which I first proposed to begin with). Using 2.1 opens up the possibility of pressure to make 2.2, 2.3, 2.4 &c, esp from people who don't understand how difficult the process of making these restoration edits are. 2.5 is clean and, if I may be so bold, adds extra motive to get things right, once (no, I'm not complaining that 2.5 even has to be made; quite happy with 2.0 here). Also, it's not like releasing in 0.5 increments is unheard of. Maybe for people who don't remember dial-up or something, and why should they be catered to?